<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
</head>
<style>
	body{
		margin: 0;
		padding: 0;
		background-color: rgba(221,221,221,1.00)
	}
	div{
		width:100px;
		height:100px;
		background:red;
		position:relative;
		animation:myan 5s infinite;
	}

	@keyframes myan{
		0%   {background:red; left:0px; top:0px;}
		25%  {background:yellow; left:200px; top:0px;}
		50%  {background:blue; left:200px; top:200px;}
		75%  {background:green; left:0px; top:200px;}
		100% {background:red; left:0px; top:0px;}
	}
	</style>
<body>
	<div></div>
</body>
</html>
